Valve-regulator.



T. M. WILKINS.

I VALVE REGULATOR. APPLICATION FILED MAY 6, 1910.

975,915. I Patented Nov. 15, 1910.

cnucnloz {REGULATOR COMPANY, or x rnnnsynvanm; j

within the nipple '17.

UNITE T 9 all whom ii (nay concern: Be-it known that I,;THoMAs M. \VILKINS,

a citizen of the United'States, residing at- East Randolph',- in the county of Oattaraugus andState of New York, have invented certain new and useful Improvements in Valve-Regulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This. invention 'lielates to fluid pressure valve regulators, and has for an object to rovide a valve with regulator controlled y the fluid pressure of .the medium passing through. the valve with improved means for nicety in'adjusting such regulating device.

lVith this andother objects in view, the invention comprises certain novel constructions, combinations and, arrangements of parts, as will be hereinafter fullyflescribed and claimed. v

The drawing represents a vertical, seetional view through a valve and through ,the

regulating device.

A' balanced valve lOis mounted in' the valve casing 11-both of substantially the usual and ordinary construction with an externally screw-threaded tube 12 inserted in the bottom of such valve casing and communicating therewith. The tube 12 scr'ews into a bushing 13 and is retained in position by a lock nut 14. At its lower end the tube 12 is continued by a nipple 15 which forms one of the extremities of the battery of diaphragms 16 all communicating and also communicating through the nipple 15 with the tube 12.

At the lower end the dia phragms connect with'a similar nipple 17 which is engaged externally by a tubular casing 18; which with the cap 19 and follower 20 forms a stuffing gland, for the rod 21. The rod 21 iscontrolled. by a hand wheel or. other means 22 and is provided with a screw-threaded portion 23inserted provided with another screw-threaded portion 21 engagec by a nut 25 disposed within the tube 12 and between such nut 25 and the end of the tube 12 a spring 26 is located which tends to force the nut away from the end of the tube 12 and by reason of the 'connection of the rod 21 with the valve. 10 to force the Valve from scat.- The diaphragins v16 are adjusted to resist the tension of the The rod 20 is also.

THoMAs M. winners, on EAsir "aANDoLPH NEW. YORK; nssxenon ro ZIERMORE zronnsonnuae, PENNSYLVANIA, A CORPORATION or Specification of Lettersratent. P t M I 15; 1910, Application filed May 6, 1910. Seriafllh. 559,847. i

spring 26 and to tend to close the valve 10. In the initial adjustment of the device the tube 12 is screwed into the bushingl3 until )the approximate adjustment under ordinary CQlldllllQIlS of thedevice is secured, it being apparent that as the tube 12 is screwed farther into the bushing 13 the spring 26 is placed under greater tension. Such adjustmentbeing secured a nicety of adjustment under varying conditionsis ,secured by the rotationoi the rod 21 which siinultaneou -icti increases the tension 'of the s ring 26 anddecrcases .the tension of the diaphragms 16 or the reverse, decreasing the tension of the spring 26 and increasing the. tension of the diaphragms 16. i

It will be apparent that the'fiuid medium passing throu h the valve casing 11 will pass downward y through the tube 12 to the,.inner bore of the nipple 15 and the connections between the 'diaphragms 16 so that such diaphragms and the tube 12 are all filled with the medium. If now the tension on the medium filling such diaphragms increases the: diaphragms are expanded thereby acting tothrow theistufling gland and its associate parts farther from .the

valve casing and carry therewith the rod 21 to seat the valve against the tension of the spring 26. When the tension upon the medium in,the diaphragms decreases the,

tension of the spring 26 acts against such decreased tension and opens the valve '10.

It will be apparent thatby reason of the simultaneous and opposite adjustment of the tension of the spring 26 and the diaphragm 16 by the single operation of retating the rod 21 an extreme niceity of adjustment may be readily and conveniently accomplishe What I claim is 1. The combination with' a valve casing a and balanced valve mounted within the easing, of a valve stem passing through the tube communicating with the valve casing, tension of the spring amldecrease the ten 10 a diaphra m in communication with the sion of the diaphragm. v tube, a Va ve stem extending through the In testimonywhereof I afllx' my slguadiaphragm and through the tube and con-' ture in presence of two witnesses. meeting with the valve, a spring disposed THOMASLL WILKINS within the tube and actin upon the valve 7 stem and tending to hol the valve open Witnesses: against the resillency of the diaphragm, E. 1?. Gem, and means to simultaneously increase the N. MEEM. 

